Lighting-fixture



M. FIRMAN.

LIGHTING FIXTURE.

APPLICATION HLED SEPT. I0, 1920.

1,897,274,, Patented Nov. 15, 1921.

(June/Mom arena @FIFMEO MAX'EIRMAN, 0F BROOKLYN, NEW YQBK.

LIGHTING-FDET'URE.

actate.

Specification of letters Patent.

PatentedNov. i5, 19%..

application filed September 10, 1920. Serial No. 409,333.

To aZZ whom it may concern Be it known that T, MAX FIRMAN, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Lighting-Fixtures, of which the following is a specification.

The improvements relate to lighting fix- 'tures andmore particularly to that class of lighting fixtures, in which an incandescent lamp is surrounded by a globe and a reflector is positioned over the globe and lamp for the purpose of effecting what is known as indirect illumination.

The objects of the improvements, among others, are to produce a --lighting fixture of the character specified in which the parts are so constructed and arranged that the.

operations of manufacturing and assemblin them are simplified, and a strong, light, and very efiective' device is produced. They are illustrated in the accompanying drawing, in

which the figure represents a vertical medial section of a lighting fixture embodying the improvements, and connected with an incandescent electric lamp and socket.

The globe A consists of four integral parts made of translucent material. They are the swelled or convex portion A surrounding the lamp terminating in the concave pointed portion A the contracted and inwardly curved portion A and the grooved por tion A V The reflector B comprises a concave body portion B the beaded edge B, the upwardly extending annular step B the inwardly curved portion 18 and the collar B all of these parts being integral and pref- ;rably made of metal with a reflective sur- Secured within the collar B by a rivet E is a clamping ring E having eyes E in its outwardly turned extremities to receive a clamping screw or similar device for connecting the entire fixture with the lamp socket F.

The globe A is secured to the reflector B by means of screws D threa'ded'in openings of the vertical step B and engaging the groove A of the globe A. The lamp. C is preferably of the form shown in the draw- A and second by the part B of the reflector, as well as by the upper part B of the reflector. In this manner, and on account of the reflection and ire-reflection or" the light rays between the translucent globe and the metal reflector, substantially all of the upwardly projectedrays, and some of l the downwardly projected rays, of light are intercepted and diffused so that a soft highly illuminative light, in which all the rays are utilized, is produced. The globe produces excellent results when made of translucent, but not transparent, material, and in the form illustrated and described. Other material may however be employed, and the form of the globe may be modified to secure different or modified results. The form and material of the reflector may also be varied without departing from the scope of the improvements, but the present form and present polished sheet metal composition of the reflector produce excellent results.

In assembling the fixture it is only necessary to secure the reflector to the lamp socket and then secure the globe within the reflector by placing its upper edges against the cover portion B and engaging the groove A with the screws D. This is but the work of a. few moments and can be performed by any person of ordinary intelligence.

What I claim is:

In a lighting fixture, the combination of a support, a single-piece reflector having an inner downwardly convex portion, an intermediate annular vertical portion, and an outer downwardly concave portion, a singlepiece globe of translucent material having an annular groove at its top fitting within the vertical portion of the reflector, and an outwardly concave portion opposed to the outer portion of the reflector, supporting means for the globe carried by the vertical portion of the reflector and engaging the groove, and means carried by the inner portion of the reflector, for attaching the same to the support. I

Witness my hand this 25th day of August, 10 1920, at the cit of NGW'YOIk, in the county and State of ew York.

MAX FIRMAN. 

